Ivory bought some stamps. She gave
16 of the stamps to her cousin and sold
56 of the remaining stamps. After that, she bought another 186 stamps and had the same number of stamps that she bought at first. How many stamps did Ivory buy at first?
| Her cousin |
Remaining stamps |
Bought stamps |
Total |
1x6 =
6 u |
5x6 =
30 u |
|
6x6 =
36 u |
| |
Sold |
Left |
|
|
| |
5x5 |
1x5 |
|
|
| 6 u |
25 u |
5 u |
186 |
|
The remaining number of stamps before Ivory bought another 186 stamps is repeated. Make the remaining number of stamps the same. LCM of 5 and 6 is 30.
Total number of stamps at first = 36 u
Number of stamps that Ivory had left and bought after that = 5 u + 186
36 u = 5 u + 186
36 u - 5 u = 186
31 u = 186
1 u = 186 ÷ 31 = 6
Total number of stamps at first
= 36 u
= 36 x 6
= 216
Answer(s): 216
